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Solar battery sealing member and solar battery module

Active Publication Date: 2014-10-01
MITSUI CHEM TOHCELLO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the ethylene-vinyl acetate copolymer satisfies the above physical properties, but the polarity of vinyl acetate in the ethylene-vinyl acetate copolymer is high, so the volume resistivity is insufficient

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0249] Hereinafter, although this invention is demonstrated concretely based on an Example, this invention is not limited to these Examples.

[0250] (1) Measurement method

[0251] [Content ratio of ethylene unit, α-olefin, and vinyl acetate unit]

[0252] After filtering the solution obtained by heating and dissolving 0.35 g of the sample in 2.0 ml of hexachlorobutadiene with a glass filter (G2), 0.5 ml of deuterated benzene was added, and the solution was placed in an NMR tube with an inner diameter of 10 mm. Use the JNM GX-400 NMR measurement device manufactured by JEOL at 120°C 13 C-NMR determination. The cumulative number of times is more than 8000 times. according to income 13 The C-NMR spectrum quantifies the content ratio of ethylene units in the copolymer and the content ratios of α-olefin and vinyl acetate units.

[0253] [MFR]

[0254]The MFR of the ethylene-α-olefin copolymer and the ethylene-vinyl acetate copolymer was measured in accordance with ASTM D1238...

Synthetic example 1

[0297]A toluene solution of methylalumoxane as a cocatalyst was supplied at a ratio of 8.0 mmol / hr to one supply port of a continuous polymerizer with an internal volume of 50 L equipped with a stirring blade, and a toluene solution of methylaluminoxane as a main catalyst was supplied at a ratio of 0.025 mmol / hr. A hexane slurry of (1,3-dimethylcyclopentadienyl)zirconium dichloride was supplied to a hexane solution of triisobutylaluminum at a ratio of 0.5 mmol / hr to be used as a catalyst solution and a polymerization solvent The dehydrated and purified n-hexane was continuously supplied so that the total amount of the dehydrated and purified n-hexane became 20 L / hr. At the same time, ethylene is continuously supplied at a ratio of 3kg / hr, 1-butene is continuously supplied at a ratio of 15kg / hr, and hydrogen is continuously supplied at a ratio of 5NL / hr to other supply ports of the polymerizer. At a polymerization temperature of 90°C, a total pressure of 3MPaG , The continuous ...

Synthetic example 2

[0299] Supply the hexane solution of [dimethyl (tert-butylamide) (tetramethyl-η5-cyclopentadienyl) silane] titanium dichloride as procatalyst with the ratio of 0.012mmol / hr respectively, with 0.05mmol The ratio of / hr supplies triphenyl carbon as a cocatalyst The toluene solution of (tetrapentafluorophenyl) borate is supplied to the hexane solution of triisobutylaluminum at the ratio of 0.4mmol / hr, and the 1-butene is supplied at the ratio of 5kg / hr to 100NL / hr An ethylene-α-olefin copolymer was obtained in the same manner as in Synthesis Example 1 above except that hydrogen was supplied in proportion. The yield was 1.3 kg / hr. The physical properties are shown in Table 1.

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PUM

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Abstract

A solar battery sealing member comprises a resin composition containing cross-linked resin, and satisfies the following conditions 1) and 2). 1) The percentage absorption of acetone when this solar battery sealing member, subjected to cross-linking treatment by heating and pressurising for 15 minutes at 150 DEG C, 100 kPa, after heating under reduced pressure for 3 minutes at 150 DEG C, 250 Pa, was immersed for one hour in acetone at 23 DEG C, is 3.5 to 12.0 weight % with respect to the weight of this solar battery sealing member after cross-linking treatment. 2) The volumetric resistivity of this solar battery and sealing member subjected to cross-linking treatment as above, measured at a temperature of 100 DEG C, with an applied voltage of 500V, in accordance with JIS K6911, is 1.01013~1.01018Omega.cm.

Description

technical field [0001] The present invention relates to a solar cell sealing material and a solar cell module. Background technique [0002] In the midst of increasing seriousness of global environmental problems, energy problems, etc., solar cells are attracting attention as a means of generating energy that is clean and does not worry about depletion. When a solar cell is used outdoors such as on a roof portion of a building, it is generally used in the form of a solar cell module. [0003] The above-mentioned solar cell module is generally manufactured through the following steps. First, crystalline solar cell elements (hereinafter sometimes referred to as power generation elements or cells) formed of polycrystalline silicon, single crystal silicon, etc. are produced, or amorphous silicon, crystalline silicon, etc. Thin-film solar cell elements obtained from very thin films of μm. Next, in order to obtain a crystalline solar cell module, the protective sheet for solar ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/042C08K3/00C08K5/00C08L23/08C09K3/10
CPCC08K5/00C08K3/00C08L33/06C08L23/08C08L2205/02C08L2203/206H01L31/0481C08L23/0815C09K3/10C08L23/02Y02E10/50C08L2203/204H10F19/804
Owner MITSUI CHEM TOHCELLO INC